Why my tank sucking alk?

[Notsolostfish]

Im genuinely at loss here 2 years and a half tank, decently packed. Im at 101ml of afr, daily. Calc, and mag stable. All been dropping so i added redsea alk on a doser, and did 7ml daily. Worked for a while. Now back to dropping increased to 10ml a day. Still dropping 3 days ago my alk dropped from 8.6 to 8.0 so increased 10ml/day. Still dropping. 3 days after back to 8.0. Do i just increase redsea alk more?

 

[Rhetoric]

Ive always viewed increase demand for Alk as a healthy growing reef tank. My volume of water is a lot less (20 gallons) and is never ever completely stable. Alk is always trending down, as my corals get bigger.

I just up my All for reef dose, don't over think it

 

[backbayreef]

Good problem to have - let’s grow more coralline algae! :)